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|SQL - Interview Questions and Answers for 'Find 2nd highest salary sql database' - 1 question(s) found - Order By Newest|
|Ans. Select salary from (select salary from employee where department = order by salary desc limit 5) emp order by salary limit 1 AND Select salary from (select salary from employee where department = order by salary desc limit 2) emp2 order by salary limit 1|
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|What are Inner , Outer , Left and Right Joins in SQL ?|
|What is JDBC? Describe the steps needed to execute a SQL query using JDBC.|
| What is a self Join and give an example of a self Join ?|
What is self Join and What is it's purpose ?
|Is there any schema in mongo DB ?|
|Difference between Inner and Outer Join ?|
|What is a Cursor ?|
|What are temp tables ?|
|Does SQL allow null values ? Can we use it within Where clause ?|
|Write an SQL to find all records having all upper case alphanumeric characters in a field ?|
|Write an SQL to find all records having all numeric characters in a field ?|